using Aitex.Core.RT.Log;
using Aitex.Core.UI.View.Common;
using Aitex.UI.RecipeEditor;
using Aitex.UI.RecipeEditor.View;
using Prism.Commands;
using Prism.Mvvm;
using Prism.Regions;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using System.Xml;
using Venus_Core;
using Venus_MainPages.PMs;
using Venus_MainPages.Views;
using WPF.Themes.UserControls;

namespace Venus_MainPages.ViewModels
{
    internal class RecipeViewModel : BindableBase
    {
        #region 私有字段
        private string m_Title;
       
        private string m_chamId = "PMA";
        private string m_CurrentRecipeName;


        private UiRecipeManager m_uiRecipeManager = new UiRecipeManager();
        private RecipeView recipeView;
        private TreeView treeViewRcpList;
        private RecipeEditorControl tableRecipeGrid;

        private Recipe m_currentRecipe;
        private string m_recipeType;
        private bool firstLoad=true;


        #endregion

        #region  属性
        public string Title
        {
            get { return m_Title; }
            set { SetProperty(ref m_Title, value); }
        }

        public string CurrentRecipeName
        {
            get { return m_CurrentRecipeName; }
            set { SetProperty(ref m_CurrentRecipeName, value); }
        }

        public Recipe CurrentRecipe
        {
            get { return m_currentRecipe; }
            set 
            { 
                m_currentRecipe = value;
                RecipeType = m_currentRecipe.Header.Type.ToString();
            }
        }
        public string RecipeType
        {
            get { return m_recipeType; }
            set { SetProperty(ref m_recipeType, value); }
        }
        #endregion

        #region 命令
        private DelegateCommand _NewCommand;
        public DelegateCommand NewCommand =>
            _NewCommand ?? (_NewCommand = new DelegateCommand(OnNew));

        private DelegateCommand _ReNameCommand;
        public DelegateCommand ReNameCommand =>
            _ReNameCommand ?? (_ReNameCommand = new DelegateCommand(OnReName));

        private DelegateCommand _DeleteCommand;
        public DelegateCommand DeleteCommand =>
            _DeleteCommand ?? (_DeleteCommand = new DelegateCommand(OnDelete));

        private DelegateCommand<Object> _MouseRightButtonDownCommand;
        public DelegateCommand<Object> MouseRightButtonDownCommand =>
            _MouseRightButtonDownCommand ?? (_MouseRightButtonDownCommand = new DelegateCommand<Object>(OnMouseRightButtonDown));

        private DelegateCommand<Object> _LoadedCommand;
        public DelegateCommand<Object> LoadedCommand =>
            _LoadedCommand ?? (_LoadedCommand = new DelegateCommand<Object>(OnLoaded));

        private DelegateCommand _SaveRecipeCommand;
        public DelegateCommand SaveRecipeCommand =>
            _SaveRecipeCommand ?? (_SaveRecipeCommand = new DelegateCommand(OnSaveRecipe));

        private DelegateCommand _AddStepCommand;
        public DelegateCommand AddStepCommand =>
            _AddStepCommand ?? (_AddStepCommand = new DelegateCommand(OnAddStep));

        private DelegateCommand _DeleteStepCommand;
        public DelegateCommand DeleteStepCommand =>
            _DeleteStepCommand ?? (_DeleteStepCommand = new DelegateCommand(OnDeleteStep));

        //private DelegateCommand _ReLoadCommand;
        //public DelegateCommand ReLoadCommand =>
        //    _ReLoadCommand ?? (_ReLoadCommand = new DelegateCommand(OnReLoad));
        #endregion

        #region 构造函数
        public RecipeViewModel()
        {
            Title = "配方管理";

        }
        #endregion

        #region 命令方法
        private void OnNew()
        {

        }
        private void OnReName()
        {

        }
        private void OnDelete()
        {

        }

        private void OnAddStep()
        {
            this.tableRecipeGrid.ControlViewModel.OnAddStep();
        }
        private void OnDeleteStep()
        {
            this.tableRecipeGrid.ControlViewModel.OnDeleteStep();
        }
        private void OnReLoad()
        {
            this.tableRecipeGrid.ControlViewModel.LoadRecipe(CurrentRecipe);
        }
        private void OnSaveRecipe()
        {
            SaveRecipe(CurrentRecipeName, RecipeUnity.RecipeToString(CurrentRecipe));
        }
        private void OnLoaded(Object myrecipeView)
        {
            if (firstLoad == true)
            {
                firstLoad = false;
                recipeView = myrecipeView as RecipeView;
                treeViewRcpList = recipeView.treeViewRcpList;
                tableRecipeGrid = recipeView.tableRecipeGrid;
                UpdateRecipeFileList();
                
                treeViewRcpList.SelectedItemChanged += TreeViewRcpList_SelectedItemChanged;
            }
        }

        private void TreeViewRcpList_SelectedItemChanged(object sender, RoutedPropertyChangedEventArgs<object> e)
        {
            var selectedItem = e.NewValue as TreeViewFileItem;
            if (selectedItem == null)
                return;
            try
            {
                CurrentRecipeName = selectedItem.FileName;
                string xmlRecipeData = m_uiRecipeManager.LoadRecipe(m_chamId, selectedItem.FileName);
                if (xmlRecipeData == "")
                {
                    treeViewRcpList.Items.Remove(selectedItem);
                    return;
                }
                CurrentRecipe = Recipe.Load(xmlRecipeData);
                this.tableRecipeGrid.ControlViewModel.LoadRecipe(CurrentRecipe);
            }
            catch (Exception ex)
            {
                MessageBox.Show(string.Format(Application.Current.Resources["GlobalLableTitleRecipeEditor"].ToString(), ex.Message), Application.Current.Resources["GlobalLableTitleRecipeEditor"].ToString(), MessageBoxButton.OK, MessageBoxImage.Error);
            }
            e.Handled = true;
        }





        /// <summary>
        /// Load recipe data by recipe name
        /// </summary>
        /// <param name="receipeName"></param>
        /// <returns></returns>
        public string LoadRecipe(string receipeName)
        {
            return m_uiRecipeManager.LoadRecipe(m_chamId, receipeName);
        }

        /// <summary>
        /// Save recipe by recipe name and recipe data
        /// </summary>
        /// <param name="recipeName"></param>
        /// <param name="recipe"></param>
        /// <returns></returns>
        public bool SaveRecipe(string recipeName, string recipeContent)
        {
            return m_uiRecipeManager.SaveRecipe(m_chamId, recipeName, recipeContent);
        }

        /// <summary>
        /// 右击TreeView，上下文菜单选择功能
        /// </summary>
        /// <param name="treeView"></param>
        private void OnMouseRightButtonDown(Object treeView)
        {
            //treeViewRcpList = treeView as TreeView;

            treeViewRcpList.ContextMenu = new ContextMenu() { Background = new SolidColorBrush(Colors.AliceBlue)};

            MenuItem menuItem = new MenuItem();

            menuItem = new MenuItem();
            menuItem.Tag = "\\";
            menuItem.Click += new RoutedEventHandler(menuItem_MouseClick_CreateRecipe);
            menuItem.Header = Application.Current.Resources["GlobalLableMenuNewRecipe"];
            treeViewRcpList.ContextMenu.Items.Add(menuItem);

            menuItem = new MenuItem();
            menuItem.Tag = "\\";
            //menuItem.Click += new RoutedEventHandler(menuItem_MouseClick_ImportRecipe);
            menuItem.Header = Application.Current.Resources["GlobalLableMenuImportRecipe"];
            treeViewRcpList.ContextMenu.Items.Add(menuItem);

            treeViewRcpList.ContextMenu.Items.Add(new Separator());

            menuItem = new MenuItem();
            menuItem.Tag = "\\";
            //menuItem.Click += new RoutedEventHandler(menuItem_MouseClick_CreateFolder);
            menuItem.Header = Application.Current.Resources["GlobalLableMenuNewFolder"];
            treeViewRcpList.ContextMenu.Items.Add(menuItem);

            treeViewRcpList.ContextMenu.Visibility = Visibility.Visible;
        }

        /// <summary>
        /// 创建新的配方
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void menuItem_MouseClick_CreateRecipe(object sender, RoutedEventArgs e)
        {
            MenuItem mit = sender as MenuItem;
            string folderName = mit.Tag as string;
            PerformCreateRecipe(folderName);
        }

        private void PerformCreateRecipe(string folderName)
        {
            try
            {
                RecipeNameInputDlg dlg = new RecipeNameInputDlg(Application.Current.Resources["GlobalLableMsgInputRecipeName"].ToString())
                {
                    Owner = Application.Current.MainWindow
                };
                if (dlg.ShowDialog() == true)
                {
                    var recipeName = folderName + "\\" + dlg.InputText;
                    RecipeType type = (RecipeType)Enum.Parse(typeof(RecipeType), dlg.SelectedType);
                    string newRecipe =RecipeUnity.CreateRecipe(type, dlg.InputText);

                    //string recipeContent = m_uiRecipeManager.GetRecipeTemplate(m_chamId);

                    //m_uiRecipeManager.SaveAsRecipe(m_chamId, recipeName, m_uiRecipeManager.LoadRecipe("system",folderName));
                    if (SaveAsRecipe(recipeName, newRecipe))
                    {
                        //UpdateRecipeFileList();
                        //SelectRecipe(recipeName);
                        treeViewRcpList.Items.Add(new TreeViewFileItem(dlg.InputText));
                    }
                    else
                    {
                        WPFMessageBox.ShowError("Error");
                    }

                }
            }
            catch (Exception ex)
            {
                LOG.WriteExeption(ex);
                MessageBox.Show(string.Format(Application.Current.Resources["GlobalLableMsgRecipeCreateException"].ToString(), ex.Message), Application.Current.Resources["GlobalLableTitleRecipeEditor"].ToString(), MessageBoxButton.OK, MessageBoxImage.Error);
            }
        }

        /// <summary>
        /// SaveAs recipe by recipe name and recipe data
        /// </summary>
        /// <param name="recipeName"></param>
        /// <param name="recipe"></param>
        /// <returns></returns>
        public bool SaveAsRecipe(string recipeName, string recipeContent)
        {
            return m_uiRecipeManager.SaveAsRecipe(m_chamId, recipeName, recipeContent);
        }
        /// <summary>
        /// Recipe template
        /// </summary>
        public string RecipeTemplate
        {
            get
            {
                string template = m_uiRecipeManager.GetRecipeTemplate(m_chamId);
                return template;
            }
        }

        private void UpdateRecipeFileList()
        {
            XmlDocument doc = new XmlDocument();
            doc.LoadXml(GetXmlRecipeList());
            treeViewRcpList.Items.Clear();
            CreateTreeViewItems(doc.DocumentElement, this.treeViewRcpList);
        }

        /// <summary>
        /// Get recipe list in xml format
        /// </summary>
        /// <returns></returns>
        public string GetXmlRecipeList()
        {
            return m_uiRecipeManager.GetXmlRecipeList(m_chamId, true) ?? "";
        }

        void CreateTreeViewItems(XmlElement curElementNode, ItemsControl itemsControl)
        {
            foreach (XmlElement ele in curElementNode.ChildNodes)
            {
                if (ele.Name == "File")
                {
                    string fileName = ele.Attributes["Name"].Value;
                    fileName = fileName.Substring(fileName.LastIndexOf('\\') + 1);
                    TreeViewFileItem item = new TreeViewFileItem(ele.Attributes["Name"].Value);
                    item.Tag = ele.Attributes["Name"].Value;
                    //item.ToolTip = fileName;
                    itemsControl.Items.Add(item);
                }
                else if (ele.Name == "Folder")
                {
                    string folderName = ele.Attributes["Name"].Value;
                    folderName = folderName.Substring(folderName.LastIndexOf('\\') + 1);
                    TreeViewFolderItem item = new TreeViewFolderItem(folderName);
                    item.Tag = ele.Attributes["Name"].Value;
                    CreateTreeViewItems(ele, item);
                    item.IsExpanded = false;
                    itemsControl.Items.Add(item);
                }
            }
        }

        //void SelectRecipe(string recipeName)
        //{
        //    try
        //    {
        //        string[] paths = recipeName.Split(new char[] { '\\' }, StringSplitOptions.RemoveEmptyEntries);
        //        string fileName = "";
        //        for (int i = 0; i < paths.Length - 1; i++)
        //            fileName += paths[i] + "\\";
        //        fileName += paths[paths.Length - 1];
        //        selectRecipe(treeViewRcpList, paths, 0, fileName);
        //    }
        //    catch (Exception ex)
        //    {
        //        LOG.WriteExeption(ex);
        //    }
        //}

        //ItemsControl selectRecipe(ItemsControl currentNode, string[] paths, int index, string fileName)
        //{
        //    if (currentNode == null)
        //        return null;
        //    if (index == paths.Length - 1)
        //    {
        //        foreach (var item in currentNode.Items)
        //        {
        //            TreeViewFileItem tvf = item as TreeViewFileItem;
        //            if (tvf != null && tvf.FileName == fileName)
        //            {
        //                tvf.IsSelected = true;
        //                return null;
        //            }
        //        }
        //    }
        //    foreach (var item in currentNode.Items)
        //    {
        //        TreeViewFolderItem tvf = item as TreeViewFolderItem;
        //        if (tvf != null && tvf.FolderName == paths[index])
        //        {
        //            tvf.IsExpanded = true;
        //            selectRecipe(tvf, paths, index + 1, fileName);
        //            break;
        //        }
        //    }
        //    return null;
        //}
        #endregion
    }
}